The effect of the substrate on the growth and development of seedlings of siberian cedar pine with a closed root system
Abstract
The comparative data of development and growth, formation of phytomass of seedlings of Siberian cedar pine with a closed root system during the first year of cultivation in the greenhouse of the Reshetnev Siberian State University of Science and Technology are presented., Substrates of different composition, the basis of which was neutral peat (pH = 7) or coconut substrate, were used for the cultivation of seedlings. Vermiculite and/or perlite were added to the substrates in concentrations of 5 and 12 %. Seeds of Siberian cedar pine were collected in the Yemelyanovsky forestry of the Krasnoyarsk Krai, subjected to trench stratification. Sowing was carried out in June 2021.
During the first growing season, the length of cotyledons, the primary needles of seedlings, the formed apical buds of seedlings, as well as the height and diameter of the stem at the neck of the root of seedlings and their phytomass, were studied.
As a result of the conducted research, it was found that the composition of the substrate influences the linear dimensions and phytomass of the aboveground and underground parts of plants. Large stem sizes are noted on substrates of pure neutral peat, peat mixtures with 5 % perlite and 5 % vermiculite, and coconut substrate with 12% vermiculite. The lag of linear dimensions was revealed in seedlings grown on a pure coconut substrate and peat mixture with the addition of 12 % perlite. Seedlings growing on peat substrates form by the end of the first growing season a root system of smaller size and weight than on substrates, the main component of which is coconut.
Keywords
Siberian cedar pine,
seedlings,
cotyledons,
primary needles,
seedlings,
root system,
phytomass,
substrate
About the Authors
N. P. Bratilova
Reshetnev Siberian State University of Science and Technology
Russian Federation
Russian Federation
31, Krasnoyarskii Rabochii prospekt, Krasnoyarsk, 660037
A. A. Korotkov
Reshetnev Siberian State University of Science and Technology
Russian Federation
Russian Federation
31, Krasnoyarskii Rabochii prospekt, Krasnoyarsk, 660037
D. A. Konovalova
Reshetnev Siberian State University of Science and Technology
Russian Federation
Russian Federation
31, Krasnoyarskii Rabochii prospekt, Krasnoyarsk, 660037
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Review
For citations:
Bratilova N.P., Korotkov A.A., Konovalova D.A. The effect of the substrate on the growth and development of seedlings of siberian cedar pine with a closed root system. Conifers of the boreal area. 2022;40(5):347-352. (In Russ.)
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